[goobatrooba]

While other commenters take the lesson that Xi goes after corruption, I would restate it:

* he goes after corrupt officials, in both minor roles and very public big cases; and * he also accused inconvenient people (mostly potential contenders) of corruption to get rid of them (see the list of party leaders purged since Xi came to power, with some even led off stage at the main CCP Congress in a show of power). * How many corrupt officials are not persecuted due to political favouritism is by definition impossible to know from the outside.